src/gromacs/ewald/tests/testhardwarecontexts.h

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  35 #ifndef GMX_EWALD_TEST_HARDWARE_CONTEXTS_H
  36 #define GMX_EWALD_TEST_HARDWARE_CONTEXTS_H
  37
  38 /*! \internal \file
  39  * \brief
  40  * Describes test environment class which performs hardware enumeration for unit tests.
  41  *
  42  * \author Aleksei Iupinov <a.yupinov@gmail.com>
  43  * \ingroup module_ewald
  44  */
  45
  46 #include <map>
  47 #include <vector>
  48
  49 #include <gtest/gtest.h>
  50
  51 #include "gromacs/ewald/pme_gpu_program.h"
  52 #include "gromacs/hardware/gpu_hw_info.h"
  53
  54 struct gmx_hw_info_t;
  55
  56 namespace gmx
  57 {
  58 namespace test
  59 {
  60 //! Hardware code path being tested
  61 enum class CodePath
  62 {
  63     CPU,
  64     GPU
  65 };
  66
  67 //! Return a string useful for human-readable messages describing a \c codePath.
  68 const char* codePathToString(CodePath codePath);
  69
  70 /*! \internal \brief
  71  * A structure to describe a hardware context  that persists over the lifetime
  72  * of the test binary - an abstraction over PmeGpuProgram with a human-readable string.
  73  */
  74 struct TestHardwareContext
  75 {
  76     //! Hardware path for the code being tested.
  77     CodePath codePath_;
  78     //! Readable description
  79     std::string description_;
  80     //! Device information pointer
  81     const DeviceInformation* deviceInfo_;
  82     //! Persistent compiled GPU kernels for PME.
  83     PmeGpuProgramStorage program_;
  84
  85 public:
  86     //! Retuns the code path for this context.
  87     CodePath getCodePath() const { return codePath_; }
  88     //! Returns a human-readable context description line
  89     std::string getDescription() const { return description_; }
  90     //! Returns the device info pointer
  91     const DeviceInformation* getDeviceInfo() const { return deviceInfo_; }
  92     //! Returns the persistent PME GPU kernels
  93     const PmeGpuProgram* getPmeGpuProgram() const { return program_.get(); }
  94     //! Constructs the context
  95     TestHardwareContext(CodePath codePath, const char* description, const DeviceInformation* deviceInfo) :
  96         codePath_(codePath),
  97         description_(description),
  98         deviceInfo_(deviceInfo),
  99         program_(buildPmeGpuProgram(deviceInfo_))
 100     {
 101     }
 102     ~TestHardwareContext();
 103 };
 104
 105 //! A container of handles to hardware contexts
 106 typedef std::vector<std::unique_ptr<TestHardwareContext>> TestHardwareContexts;
 107
 108 /*! \internal \brief
 109  * This class performs one-time test initialization (enumerating the hardware)
 110  */
 111 class PmeTestEnvironment : public ::testing::Environment
 112 {
 113 private:
 114     //! General hardware info
 115     gmx_hw_info_t* hardwareInfo_;
 116     //! Storage of hardware contexts
 117     TestHardwareContexts hardwareContexts_;
 118
 119 public:
 120     //! This is called by GTest framework once to query the hardware
 121     void SetUp() override;
 122     //! Get available hardware contexts.
 123     const TestHardwareContexts& getHardwareContexts() const { return hardwareContexts_; }
 124     //! Get available hardware information.
 125     const gmx_hw_info_t* hwinfo() const { return hardwareInfo_; }
 126 };
 127
 128 //! Get the test environment
 129 const PmeTestEnvironment* getPmeTestEnv();
 130
 131 /*! \brief This constructs the test environment during setup of the
 132  * unit test so that they can use the hardware context. */
 133 void callAddGlobalTestEnvironment();
 134
 135 } // namespace test
 136 } // namespace gmx
 137 #endif